Club Certificate2025
J-ForceNOR 15774
Norges Seilforbund
Sognsveien 73
0854 OSLO
Rated boat velocities in knots
Wind Velocity 4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat Angles42.4°42.4°40.0°37.9°36.6°36.1°36.1°36.2°37.5°
Beat VMG2.563.524.274.795.005.095.155.205.11
52°3.965.306.216.716.917.017.077.167.14
60°4.195.546.406.857.097.217.307.417.43
75°4.315.686.526.967.307.547.687.877.97
90°4.375.816.707.027.337.708.018.398.62
110°4.546.006.937.487.848.168.469.039.59
120°4.405.886.897.518.078.528.929.7610.74
135°3.745.266.467.187.818.489.2711.3913.30
150°3.144.445.576.497.157.688.2510.0513.68
Run VMG2.713.844.825.626.236.667.148.7111.85
Gybe Angles143.5°143.5°147.6°149.8°153.2°151.2°148.7°141.2°146.4°
APH ToD:551.7CDL: 8.633APH ToT: 1.0875CertNo:667244
BOAT
ClassJ/88DesignerJOHNSTONEBuilderJ Boats EuropeAge date01/2014Series date01/2013Offset fileJ-88.offData file667244
HULL
Length Overall8.960 mMaximum Beam2.854 mDraft1.972 mDisplacement2,489 kgDLR4.3329IMS DivisionPerformanceDynamic Allowance0.000%Age Allowance0.390%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight529 kg(default)Minimum weight399 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail26.7527.46Headsail Luffed20.5520.55Headsail FlyingSymmetricAsymmetric95.1695.16 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail7.20Storm Jib7.01Heavy Weather Jib18.91
SAIL LIMITS
Headsails5Spinnakers4
STABILITY
Righting MomentN/AStability IndexN/A
The owner and any other person in charge is responsible that boat is complying with her certificate in accordance with RRS 78.1 and ORC Rule 304.
Club Certificate2025
J-ForceNOR 15774
Norges Seilforbund
Sognsveien 73
0854 OSLO
Time Allowances in secs/NM
Wind Velocity 4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat VMG1408.31022.6842.3752.0719.9706.6699.0692.6704.5
52°909.5679.3579.5536.7520.8513.7508.9503.1503.9
60°859.1649.7562.3525.5507.5499.2493.4486.1484.8
75°835.2634.3552.0517.0493.0477.3468.8457.3451.7
90°823.4619.5537.0512.6490.9467.4449.6429.2417.7
110°792.5600.2519.2481.3459.0441.4425.8398.5375.3
120°818.4612.1522.7479.4446.4422.6403.6369.0335.1
135°962.4685.0557.4501.6460.9424.5388.5316.0270.6
150°1148.1810.9646.7554.5503.2468.5436.6358.1263.1
Run VMG1326.6936.3746.7640.3578.3540.6504.2413.5303.8
Selected Courses
Windward / Leeward1367.0979.5794.5696.2649.1623.6601.6553.0504.2
All purpose1037.8758.5630.8569.0536.4515.2497.5463.7435.3
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward674.90.8890
All purpose551.71.0875
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low694.60.8638
Triple Number Coastal/Long Distance Medium549.91.0912
Triple Number Coastal/Long Distance High489.21.2264
Triple Number Windward/Leeward Low886.90.6765
Triple Number Windward/Leeward Medium670.50.8948
Triple Number Windward/Leeward High588.91.0189
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance598.11.0032
Triple Number Coastal/Long Distance Low694.60.8638
Triple Number Coastal/Long Distance Medium549.91.0912
Triple Number Coastal/Long Distance High489.21.2264
Triple Number Windward/Leeward Low886.90.6765
Triple Number Windward/Leeward Medium670.50.8948
Triple Number Windward/Leeward High588.91.0189
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1441.3975.2749.0633.7570.4534.2502.6446.0415.7
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7728
Downwind "popa"0.9633
70% up, 30% down "Ilhabela"0.8215
30% up, 70% down "Ilhabela-inverso"0.8970
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low694.60.8638
Triple Number Coastal/Long Distance Medium549.91.0912
Triple Number Coastal/Long Distance High489.21.2264
Triple Number Windward/Leeward Low886.90.6765
Triple Number Windward/Leeward Medium670.50.8948
Triple Number Windward/Leeward High588.91.0189
Predominantly Upwind601.40.9977
Predominantly Downwind551.71.0875
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low694.60.8638
Triple Number AP Medium549.91.0911
Triple Number AP High489.21.2264
Triple Number Windward/Leeward Low925.20.6485
Triple Number Windward/Leeward Medium670.50.8948
Triple Number Windward/Leeward High588.91.0189
Single Number Predominant Upwind623.40.9624
Single Number Predominant Reaching545.61.0997
Single Number Predominant Downwind571.21.0503
Predominant Upwind - Low841.60.7130
Predominant Upwind - Low/Med652.70.9193
Predominant Upwind - Medium584.71.0261
Predominant Upwind - Med/High548.31.0942
Predominant Upwind - High526.81.1390
Predominant Downwind Low823.00.7290
Predominant Downwind Low/Med620.60.9668
Predominant Downwind Medium536.51.1183
Predominant Downwind Med/High472.51.2698
Predominant Downwind High416.01.4421
Predominant Reaching Low742.20.8084
Predominant Reaching Low/Med579.81.0348
Predominant Reaching Medium516.81.1610
Predominant Reaching Med/High468.71.2801
Predominant Reaching High432.71.3866
SA/DSPL Upwind25.68SA/DSPL Downwind66.17
Scoring OptionTODTOT
5-Band Windward/Leeward Low1030.20.5824
5-Band Windward/Leeward Low/Med765.60.7837
5-Band Windward/Leeward Medium660.80.9080
5-Band Windward/Leeward Med/High601.10.9982
5-Band Windward/Leeward High553.01.0850
Windward/Leeward 60-40 Low1039.00.5775
Windward/Leeward 60-40 Low/Med776.30.7729
Windward/Leeward 60-40 Medium674.90.8890
Windward/Leeward 60-40 Med/High621.00.9661
Windward/Leeward 60-40 High581.51.0318
5-Band AP Low761.20.7882
5-Band AP Low/Med613.90.9774
5-Band AP Medium542.91.1052
5-Band AP Med/High498.01.2047
5-Band AP High464.71.2913
5-Band SF Bay Tour - Low892.00.6727
5-Band SF Bay Tour - Low/Med732.90.8186
5-Band SF Bay Tour - Medium636.70.9424
5-Band SF Bay Tour - Med/High581.61.0316
5-Band SF Bay Tour - High539.51.1121
Chicago-Mac Upwind0.9357
Chicago-Mac All Purpose0.9741
Chicago-Mac Downwind1.0106
Bayview-Mac Cove Island0.7240
Bayview-Mac Shore0.7282
Harvest Moon Regatta477.01.2580
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance598.11.0032
Triple Number Coastal/Long Distance Low694.60.8638
Triple Number Coastal/Long Distance Medium549.91.0912
Triple Number Coastal/Long Distance High489.21.2264
Triple Number Windward/Leeward Low886.90.6765
Triple Number Windward/Leeward Medium670.50.8948
Triple Number Windward/Leeward High588.91.0189
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1441.3975.2749.0633.7570.4534.2502.6446.0415.7
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance598.11.0032
Triple Number Coastal/Long Distance Low694.60.8638
Triple Number Coastal/Long Distance Medium549.91.0912
Triple Number Coastal/Long Distance High489.21.2264
Triple Number Windward/Leeward Low886.90.6765
Triple Number Windward/Leeward Medium670.50.8948
Triple Number Windward/Leeward High588.91.0189
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1441.3975.2749.0633.7570.4534.2502.6446.0415.7
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance598.1
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1441.3975.2749.0633.7570.4534.2502.6446.0415.7
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low694.60.8638
Triple Number Coastal/Long Distance Medium549.91.0912
Triple Number Coastal/Long Distance High489.21.2264
Triple Number Windward/Leeward Low886.90.6765
Triple Number Windward/Leeward Medium670.50.8948
Triple Number Windward/Leeward High588.91.0189
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating598.11.0032
FinRating, kevyt tuuli1010.20.9899
FinRating, kova tuuli465.51.0741
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low694.60.8638
Triple Number Coastal/Long Distance Medium549.91.0912
Triple Number Coastal/Long Distance High489.21.2264
Triple Number Windward/Leeward Low886.90.6765
Triple Number Windward/Leeward Medium670.50.8948
Triple Number Windward/Leeward High588.91.0189
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance1.0032
Triple Number Coastal/Long Distance Low0.8638
Triple Number Coastal/Long Distance Medium1.0912
Triple Number Coastal/Long Distance High1.2264
Triple Number Windward/Leeward Low0.6765
Triple Number Windward/Leeward Medium0.8948
Triple Number Windward/Leeward High1.0189
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1441.3975.2749.0633.7570.4534.2502.6446.0415.7
For information
General Purpose Handicap (GPH)616.2
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance598.11.0032
Triple Number Coastal/Long Distance Low694.60.8638
Triple Number Coastal/Long Distance Medium549.91.0912
Triple Number Coastal/Long Distance High489.21.2264
Triple Number Windward/Leeward Low886.90.6765
Triple Number Windward/Leeward Medium670.50.8948
Triple Number Windward/Leeward High588.91.0189
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1441.3975.2749.0633.7570.4534.2502.6446.0415.7
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low694.60.8638
Triple Number Coastal/Long Distance Medium549.91.0912
Triple Number Coastal/Long Distance High489.21.2264
Triple Number Windward/Leeward Low886.90.6765
Triple Number Windward/Leeward Medium670.50.8948
Triple Number Windward/Leeward High588.91.0189
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance598.11.0032
Triple Number Coastal/Long Distance Low694.60.8638
Triple Number Coastal/Long Distance Medium549.91.0912
Triple Number Coastal/Long Distance High489.21.2264
Triple Number Windward/Leeward Low886.90.6765
Triple Number Windward/Leeward Medium670.50.8948
Triple Number Windward/Leeward High588.91.0189
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1441.3975.2749.0633.7570.4534.2502.6446.0415.7
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance598.11.0032
Triple Number Coastal/Long Distance Low694.60.8638
Triple Number Coastal/Long Distance Medium549.91.0912
Triple Number Coastal/Long Distance High489.21.2264
Triple Number Windward/Leeward Low886.90.6765
Triple Number Windward/Leeward Medium670.50.8948
Triple Number Windward/Leeward High588.91.0189
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1441.3975.2749.0633.7570.4534.2502.6446.0415.7
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low694.6
Triple Number Coastal/Long Distance Medium549.9
Triple Number Coastal/Long Distance High489.2
Triple Number Windward/Leeward Low886.9
Triple Number Windward/Leeward Medium670.5
Triple Number Windward/Leeward High588.9
Predominantly Upwind601.4
Predominantly Downwind551.7
Predominantly Reaching533.3
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance598.11.0032
Triple Number Coastal/Long Distance Low694.60.8638
Triple Number Coastal/Long Distance Medium549.91.0912
Triple Number Coastal/Long Distance High489.21.2264
Triple Number Windward/Leeward Low886.90.6765
Triple Number Windward/Leeward Medium670.50.8948
Triple Number Windward/Leeward High588.91.0189
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1441.3975.2749.0633.7570.4534.2502.6446.0415.7
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8638
Triple Number Coastal/Long Distance Medium1.0912
Triple Number Coastal/Long Distance High1.2264
Triple Number Windward/Leeward Low0.6765
Triple Number Windward/Leeward Medium0.8948
Triple Number Windward/Leeward High1.0189
Coastal/Long Distance1.0032
Predominantly Upwind0.9977
Predominantly Downwind1.0875
For information
General Purpose Handicap (GPH)616.2
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0875
Distanseseilas Trippeltall svak vind0.8638
Distanseseilas Trippeltall mellomvind1.0912
Distanseseilas Trippeltall sterk vind1.2264
Pølsebane Trippeltall svak vind0.6765
Pølsebane Trippeltall mellomvind0.8948
Pølsebane Trippeltall sterk vind1.0189
Motvind Singeltall0.9977
Medvind Singeltall1.0875
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low694.60.8638
Triple Number Coastal/Long Distance Medium549.91.0912
Triple Number Coastal/Long Distance High489.21.2264
Triple Number Windward/Leeward Low886.90.6765
Triple Number Windward/Leeward Medium670.50.8948
Triple Number Windward/Leeward High588.91.0189
Coastal/Long Distance598.11.0032
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind601.40.9977
Predominantly Downwind551.71.0875
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore518.81.1564
Cape Doctor Coastal443.81.3518
Triple Number Coastal/Long Distance Low694.60.8638
Triple Number Coastal/Long Distance Medium549.91.0912
Triple Number Coastal/Long Distance High489.21.2264
Triple Number Windward/Leeward Low886.90.6765
Triple Number Windward/Leeward Medium670.50.8948
Triple Number Windward/Leeward High588.91.0189
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8638
Triple Number Coastal/Long Distance Medium1.0912
Triple Number Coastal/Long Distance High1.2264
Triple Number Windward/Leeward Low0.6765
Triple Number Windward/Leeward Medium0.8948
Triple Number Windward/Leeward High1.0189
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8638
Triple Number Coastal/Long Distance Medium1.0912
Triple Number Coastal/Long Distance High1.2264
Triple Number Windward/Leeward Low0.6765
Triple Number Windward/Leeward Medium0.8948
Triple Number Windward/Leeward High1.0189
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance598.11.0032
Triple Number Coastal/Long Distance Low694.60.8638
Triple Number Coastal/Long Distance Medium549.91.0912
Triple Number Coastal/Long Distance High489.21.2264
Triple Number Windward/Leeward Low886.90.6765
Triple Number Windward/Leeward Medium670.50.8948
Triple Number Windward/Leeward High588.91.0189
Predominantly Upwind601.40.9977
Predominantly Downwind551.71.0875
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1441.3975.2749.0633.7570.4534.2502.6446.0415.7
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance598.11.0032
Triple Number Coastal/Long Distance Low694.60.8638
Triple Number Coastal/Long Distance Medium549.91.0912
Triple Number Coastal/Long Distance High489.21.2264
Triple Number Windward/Leeward Low886.90.6765
Triple Number Windward/Leeward Medium670.50.8948
Triple Number Windward/Leeward High588.91.0189
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1441.3975.2749.0633.7570.4534.2502.6446.0415.7
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low694.60.8638
Triple Number AP Medium549.91.0911
Triple Number AP High489.21.2264
Triple Number Windward/Leeward Low925.20.6485
Triple Number Windward/Leeward Medium670.50.8948
Triple Number Windward/Leeward High588.91.0189
Single Number Predominant Upwind623.40.9624
Single Number Predominant Reaching545.61.0997
Single Number Predominant Downwind571.21.0503
Predominant Upwind - Low841.60.7130
Predominant Upwind - Low/Med652.70.9193
Predominant Upwind - Medium584.71.0261
Predominant Upwind - Med/High548.31.0942
Predominant Upwind - High526.81.1390
Predominant Downwind Low823.00.7290
Predominant Downwind Low/Med620.60.9668
Predominant Downwind Medium536.51.1183
Predominant Downwind Med/High472.51.2698
Predominant Downwind High416.01.4421
Predominant Reaching Low742.20.8084
Predominant Reaching Low/Med579.81.0348
Predominant Reaching Medium516.81.1610
Predominant Reaching Med/High468.71.2801
Predominant Reaching High432.71.3866
SA/DSPL Upwind25.68SA/DSPL Downwind66.17
Scoring OptionTODTOT
5-Band Windward/Leeward Low1030.20.5824
5-Band Windward/Leeward Low/Med765.60.7837
5-Band Windward/Leeward Medium660.80.9080
5-Band Windward/Leeward Med/High601.10.9982
5-Band Windward/Leeward High553.01.0850
Windward/Leeward 60-40 Low1039.00.5775
Windward/Leeward 60-40 Low/Med776.30.7729
Windward/Leeward 60-40 Medium674.90.8890
Windward/Leeward 60-40 Med/High621.00.9661
Windward/Leeward 60-40 High581.51.0318
5-Band AP Low761.20.7882
5-Band AP Low/Med613.90.9774
5-Band AP Medium542.91.1052
5-Band AP Med/High498.01.2047
5-Band AP High464.71.2913
5-Band SF Bay Tour - Low892.00.6727
5-Band SF Bay Tour - Low/Med732.90.8186
5-Band SF Bay Tour - Medium636.70.9424
5-Band SF Bay Tour - Med/High581.61.0316
5-Band SF Bay Tour - High539.51.1121
Chicago-Mac Upwind0.9357
Chicago-Mac All Purpose0.9741
Chicago-Mac Downwind1.0106
Bayview-Mac Cove Island0.7240
Bayview-Mac Shore0.7282
Harvest Moon Regatta477.01.2580
Club Certificate2025
J-ForceNOR 15774
Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ/88MeasurementHINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA8.960Max. Beam2.854Draft1.972Displacement2,489Wetted area16.61IMS L8.661LSM08.312Acc. length8.960Sink (kg/mm) 12.74
VCGD-0.245VCGM-0.163RM Rated (kg·m) 53.7Limit of positive stability(°) N/AStability IndexN/ADefault crew weight529Declared crew weightN/A
PROPELLER
Propeller TypeNo Propeller
Hydro generatorNo
RIG
Forestay tensionAftInner stayNone FittedMast materialCarbonSingle headsail furlerNoMainsail furlerArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders2Rotating mastNo
P11.230IG11.660ISP12.650MDT10.093MDL10.143MDT20.085MDL20.105TL1.940MW0.120GO0.170
E3.660J3.400BAS1.270FSDFoilSFJ0.230SPL0.000WPLTPS5.550BD0.000MWT65.00MCG4.480
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.245Flotation Date01/01/2015
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
J-ForceNOR 15774
Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment425-2018052117250.441.121.732.593.1426.7521/05/2018Seiler med britisk nr GBR 8588R425-2018052117200.441.151.712.563.1426.6621/05/2018Seiler med britisk nr GBR8588R
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment425-2018052122130.200.630.971.832.723.5311.15NoNo 20.5521/05/20187/8 målet er ikke målt da dette er et gammelt seil. Det er antatt et mål får å få seilet registrert.425-2018052117350.200.620.921.792.653.5311.30NoNo 20.4421/05/20187/8 målet er ikke målt da dette er et gammelt seil. Det er antatt et mål får å få seilet registrert.425-2018052117460.200.630.821.562.723.2210.56NoNo 18.0221/05/2018
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment425-20180521173214.8511.9513.408.638.09107%95.1621/05/2018425-20180521173114.6611.4013.036.666.7099%72.4021/05/2018